Harry comstock



(No Model.) f

'1:1. COMSTOCK.

GUN LOCK,

No. 414,796. Patnted Nov. 12, 1889.

N. PLIKRS. Pholnvlnhagnphm. wuhingmn, D. c.

' VUivrrnn STATES PATENT rricn.

HARRY COMSTOOK, OF FULTON, NEV YORK, ASSIGNOR TO THE HUNTER & OOMSTOOK ARMS COMPANY, OF SAME PLACE.

GUN-LOCK.

SPECIFICATION forming part of Letters Patent No. 414,796, dated November 12, 1889.

Application filed June l2, 1889. Serial No. 313,922. (No model.)

To all whom t may concern.-

Be it known thaty I, HARRY' ConsrocK, a citizen of the United States, residing at Fulton, in the county of Oswego and State of New York, have invented new and useful Improvements in Gun-Locks, of which the following is a specification.

My invention relates to that class of iirearms commonly known as hammer guns, and the purpose thereof is to provide a gunlocl: in which the hammers are actuated by coiled springs, the parts being so constructed and combined as to secure a perfect rebound of the hammers, while a substantial equilibrium of spring-pressure is obtained at every angle assumed by the tumblers.

Itis my purpose, also, to simplify and improve the construction of the lock by reducing the number of parts and so forming and combining the same together that the guidespindles supporting the springs shall form an inner bearing or guide for t-he tumblers and ret-aiu the hammers firmly in place.

The invention consists in the novel features of construction and new combinations of parts hereinafter fully set forth, and then definitely pointed out in the claims following this specification, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of a gun-lock embodying my invention, showing the ham finer cocked. Fig. 2 is a sectional elevation, the hammer being shown in dot-ted lines. Fig. 3 is a plan view of the lock. Fig. 4 is a transverse vertical section taken upon the line a Je, Fig. 2, the hammers being removed. Fig. 5 is a detail perspective showing the tumblers, the journal-pin, and one of the shoes detached. Fig. G is a side elevation of one of the guide-spindles, the shoe, the tumbler, and sear, showing the position of the parts at the full stroke of the hammer.

3 parallel with and rising nearly to the height of the central plate.

The numeral 4 denotes the hammers, each of which is fitted upon the square of its tumbler 5. Said tumblers each consist of a substantially-segmental metallic block 6, having a cylindrical bearing 7, which lies in a seat 8, cut in the rearward edge of the lug-plate 3, the block 6 being of such thickness as to Viit loosely and move freely between the latter and the central plate 2. Upon the block 6 is formed the actuating-tumbler, consisting of a slotted block or of two parallel plates 9, which lie adjacent to the central plate 2 and lug-plate 3, respectively, in which position they straddle the spindle 1S. In the segmental block 6 are formed notches l0, with which the sear 12 engages at half-cock and full-cock, respectively. `The'sear is formed or mounted upon a Sear-plate 13 and supported by a scar-screw 14, passing through the central plate 2. A bifurcat-ed Sear-spring 15 is attached to thebase-plate in rear ofthe central plate 2, its arms lying upon opposite sides thereof and resting upon the rearward ends of the sears. Directly behind the rearward end of the central longitudinal plate 2 is arranged a T-plate 16, sccured'to the baseplate by a screw 17, and through the extremities of the horizontal arms of said T-plate are inserted spindles 1S, having threaded ends which engage a cross-head 19, lying against the forward end of the cent-ral plate 2. Upon these spindles are mounted shoes 20, having openings 21, which are expanded slightly upon the forward faces of the shoes to form oval or elongated apertures receiving the spindles, the elongation beingin aplane parallel with the central plate 2, whereby a limited rocking. movement of the shoe in a plane .parallel with the central plate is permitted as it moves backward and forward upon the spindle. The shoes are impelled by strong spiral springs 22, coiled upon the guide-spindles 1S. The face of cach shoe adjacent to the actuating-tumbler 9 is concaved slightly, and the rearward edges of the tumbler 9 are vsufficiently convex to fit therein with substantial accuracy when the hammer is thrown down. The upper rearward angle 9 ofthe IOO actuating tumbler-plates 9 is rounded off to enable it to ride smoothly over the concave faceof the shoe. The tumblers are supported by a journal-pin 23, which projects somewhat beyond the outer faces of the hammers and receives nuts 24, by which the hammers are held on the square of the tumblers and the pin prevented .from coming out. As the 'hammer is thrown back the tumbler-plates 9,which straddle the spindle 18, are drawn toward the rear, the convex ,edges of the same passing o the concave face of the shoe and the rounded angle'9of the tumbler riding thereon. As this engage ment is made the shoe is not only retracted,

and pressing on the tumbler, substantially as described.

but it is rocked or deflected, first at the upper end and then at the lower, whereby, as the point of engagement between the shoe and the tumbler moves from above the axis of the spindle to a plane below the same, an

p equilibrium of pressure is obtained at every point. At the point where the sear engages the full-cock notch the rounded angle 9 of the tumbler 9 lies substantially inthe same plane with the axis of the spindle 18 or against the middle partof the shoe. As the trigger is pulled, the spring 22 projects the shoe forward, and as the point of contact with the tumbler moves rapidly upward the shoe is inclined somewhat, its upper end lying` somewhat nearer the rear end of the spindle than its lower end. As the hammer delivers its blowT the shoe recovers its normal position for an instant until the recoil or rebound of the hammer rocks the upper end of the shoe toward the rear, which it is able to do by reason of the fact that the recoil is resisted at the instant only by the lower end of the shoe, at which point the leverage is at its maximum. As the recoil or rebound takes place the shoe recovers its normal position and its concave face seats upon the convex rear edges of the tumbler-plates, bringing the hammer to the point where the sear drops into the half-cock notch as the trigger is released. As the hammer is projected forward by its momentum the lower angle of the shoe lies in the angle or pocket 25 between the segmental block (5 and the tumbler 9, and the shoe is rocked and the spring very slightly compressed thereby, the natural tendency of the shoe to seat upon the convex edges of fthe tumbler 9 and restore anequilibrium or equality of tension above and below the spindle causing the hammer to rebound without materially impairing the force of the blow.

1. In a gun-lock, the combination of a journal-pin carrying a tumbler-block provided with an upwardly-projecting tumbler, a sear engaging the tumbler-block, a Sear-releasing trigger, a hammer rigidly attached to the tumbler-block below the tumbler, and a spiral spring operating on the tumbler of the tum-A bler-block, substantially as described.

,4. 1n a gun-lock, the combination, with a hammer mounted upon the square of a slotted or two-part tumbler, of a spiral spring coiled upon a spindle which is straddled by said tumbler, and a shoe carried by and sliding upon the spindle between the tumbler and the spring, substantially as described.

5. In a gun-lock, the combination, with a hammer mounted on the square of a slotted or two-part tumbler having convex rear edges, of a shoe having a concave face engaging the edges of said tumblers and a spiral spring impelling the shoe and coiled upon a spindle straddled by the tumbler, said shoe being provided with an apeiture which is fiared or expanded upon opposite sides, substantially as described.

6. In; a gun-lock, the combination, with a base plate having' a central longitudinal plate and provided with lug-plates parallel with said central plate, of tumblers lying between the central plate and the lng-plates and having bearings lying in seats in the edges of said lug-plates, a journal-pin passing through both tumblers and resting in a seat in the central plate, shoes mounted upon spindles which are straddled by the tumblers, and spiral springs coiled upon the spindles and impelling said shoes, substantially as described.

7. In a gun-lock, the combination, with a base-plate having a central longitudinal plate, of tumblers consisting of two parallel plates having convex rearward edges and provided with bearings lying in seats in lug-plates parallel with the Ycentral plate, shoes having concave faces bearing upon the convex edges of the tumblers and provided with openings which are expanded upon opposite sides, and spiral springs impelling said shoes and coiled upon spindles straddled by the tumblers and supported by a T-plate at one end and a cross-head at the other, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

.HARRY COMSTOCK. W'itnesses:

N. N. STRANAHAN, CHAs. F. BOYD.

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